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Finding the Fourth Proportional to 2,799.97, 3,863.64 and 1,620.82

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Solution

The fourth proportional to 2,799.97, 3,863.64 and 1,620.82 is: 2,236.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.97 : 3,863.64 = 1,620.82 : x
  2. Step 2: Convert to fraction form
    2,799.97/3,863.64 = 1,620.82/x
  3. Step 3: Cross multiply
    2,799.97x = 3,863.64 × 1,620.82
  4. Step 4: Simplify right side
    2,799.97x = 6,262,264.98
  5. Step 5: Solve for x
    x = 6,262,264.98/2,799.97
  6. Step 6: Final answer
    x = 2,236.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.